3 years ago

Tell whether the ratios form a proportion. 1/3, 7/21

Mathematics

2 answers:

Mandarinka [93]3 years ago

7 0

Answer:

i would say yes

my work :

so i did 21 times 1 which is 21.

Tben i did 3 times 7 which is also 21.

So in conclusion i would say yes but i can't guarantee that

Anuta_ua [19.1K]3 years ago

6 0

Answer:

Yes

Step-by-step explanation:

7/21 -> Divide both sides by 7 which gets you 1/3

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How do I solve this problem?

Liono4ka [1.6K]

Answer:

$10100$

Step-by-step explanation:

Use this formula,

$\frac{n}{2} (2 {a} + d(n - 1)$

where n is the amount of even intergers, a is the starting term, d is the common difference.

the amount of even intergers from 2 to 200 is 100
The starting number is 2
The common difference is 2

$\frac{100}{2} (4 + 2(99)$

$50(4 + 198)$

$50(202)$

$10100$

3 0

2 years ago

Which is the correct algebraic expression after combining like terms? 6+8x-7-x

timama [110]

Answer:

7x-1

Step-by-step explanation:

6+8x-7-x

Combine like terms

8x-x +6-7

7x-1

8 0

4 years ago

Read 2 more answers

What is the prime factorization of 200? 2 2 × 5 3 2 3 × 5 2 2 4 × 5 2 × 5 4

Misha Larkins [42]

Answer:

2^3 * 5^2

Step-by-step explanation:

We need to break 200 down into prime numbers

200 = 20*10 These are not prime

= 4*5 * 2*5 The 4 is not prime

= 2*2*5 * 2*5 This is prime

Rearranging

= 2*2*2*5*5

= 2^3 * 5^2

8 0

3 years ago

A square has an area of 49 square feet. what is the perimeter of the square?

alexgriva [62]

I hope this helps you

4 0

3 years ago

Need help ASAP!!! Will mark brainliest

Papessa [141]

A=148°

B=148°

Step-by-step explanation:

180-38=148°

because A and B are equal, they're both 148°

7 0

3 years ago